package r6;
//12
import java.util.Locale;

public class Example03 {
    public static void main(String[] args) {
        String str ="abcd";
        System.out.println("将字符串转化为字符串数字后的结果");
        char[] charArray = str.toCharArray();
        for (int i = 0;i<charArray.length;i++){
            if (i != charArray.length - 1){
                System.out.println(charArray[i]+",");
            }else{
                System.out.println(charArray[i]);
            }
        }
        System.out.println("将int值转化为String类型后的结果:"+String.valueOf(12));
        System.out.println("将字符串转化成大小写字母的结果:"+str.toUpperCase());
        System.out.println("将字符串转化成小写字母后的结果:"+str.toLowerCase(Locale.ROOT));
    }
}
